Pivoting device for foldable revolving doors.



B. c. HAVILAND. PIVOTING DEVIGE PQR FOLDABLB'RBVOLVING DOORS.

APPLICATION FILED MAR.14, 1911.

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PIVOTING DEVICE PoR FOLDABLE REVOLVING DooRs.

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APPLIOATIQN Pimm 111111.14, 1911.

- Patented Dec. 5, 1911.

. UNITED sTATEs n"PATENT orFrcE.

EDWARD C. HAVILAND, OF NEW YORK,l N. Y., ASSIGNOR TO VAN KANNELREVOLVING DOOR COMPANY, OF NEW YORK, N. Y., A CORPORATION OF NEW JERSEY.

PIVOTING DEVICE FOR FOLDABLE REV OLVING DOORS.

'['o all whom .it may concern..-

Be it known that I, EDWARD C. HAvrLAND, a citizen of the United States,residing at 290 East One Hundred and Thirty-fourth street, New York,county of New York, and State of New York, have invented certain new anduseful Improvements in Pivot-ing Devices for Foldable Revolving Doors,fully `described and represented in the following specification and theaccompanying drawings, forming a part of the same.

This invention'v` relates to that class of foldable revolving doors, inwhich the wings which revolve within a segmental door-casing are jointedtogether so as to be folded iat, and thereafter moved to one side of thedoor-casing so as to leave an unobstructed passage through the same.tions, two of the wings are rigidly connected and projected uponopposite sides of the center bolts upon which the wings t-urn, and inthe present invention transfer-bolts (or bolts upon which the foldedwings may turn to be swung close to the casing) are fitted to movevertically in one of the rigid wings near its outer edge, and fitted tosockets in the floor and ceiling of the casing near one edge of thecasing segment, and these transfer-bolts are connected with thepivot-bolts by mechanism which prevents the retraction of thepivot-bolts or transfer-bolts from their sockets until the others areinserted in their sockets. Vithout such a mechanism connecting thepivot-bolts and Itransfer-bolts, either might be withdrawn before theother was seated in the sockets, and the wings would then be unsupportedand liable to fall, especially if a gust of wind should strike them insuch unsupported condition.

By my construction, the weightof theV operative position, and in dottedlines in their shifted position. Fig 1a shows a means to suspend thewings. Fig. 2 is an elevation of the Wings removed from the casing; Fig.3 is an elevation of one of the Specification of Letters Patent.

Application led March 14, 1911.

In such construc- Patented Dec. 5, 1911. serial No. 614,350. Y

wings with the floor and ceiling in section, and the two sets of boltsdirectly connected by levers; and Fig. 4 is a similar view with alocking-bar to govern the transfer-bolts and actuated by thepivot-bolts, a portion of the wing adjacent to the pivot-bolt beingbroken away to show the concealed bellcrank.

.In Fig. l, a designates the usual casing formed with opposite segments;the two wings connected rigidly together, and o the :wings hingedthereto near the center so that they can be folded,as indicated indotted lines b and c adjacent to one of the casing segments. The wings band c are shown `1n their operative position with ties a connecting themtogether, with one of the rigid wings b in line with a socket d in thefloor of the casing, with a transfer-bolt e fitted to such socket. `Thepivot-bolts f at the center of the wings are shown movable inwardly inFig. 3, by means of links g jointed to the bolts and to a crossbar .hwhich is fulcrumed upon one of the Afixed wings intermediate to its topand bottom, and provided with means for turning it when desired, in theusual manner. Packing flaps f are shown at the sides of the wings. Thetransfer-bolts e are shown in Fig. 3 connected with the pivotbolts f bya lever i pivoted upon one of the wings Z9 and jointed to each of thebolts by a slot j and stud 7c. When the pivot-bolts are advanced, asshown in Fig. 2, the transferbolts are retracted; and the opposite istrue when the pivot-bolts are retracted. In transferring the wings tothe side of the casing, as indicated by the dotted lines b', 0, in Fig.l, one of the rigid wings is moved until the transfer-bolts comecoincident with their sockets d, d in the licor and ceiling, and thesupport of the rigid wings can then be transferred from the pivot-boltsto the transferbolts; but owing to the mechanical connection between thetwo, shown in Fig. 3, the pivot-bolts cannot be retracted from theirsockets without advancing the transfer-bolts into their sockets, so thatthe wings are securely supported when the pivot-bolts are retracted. Thefolded wings are then in readiness to swing parallel with the side ofthe casing, as indicated yby the lines b, c', and remain secured bythetransfer-bolts,because the latter cannot be retracted until thepivot-bolts are swung back over their sockets and are advanced into thesame.

Fig. 4 shows a locking-bar Z actuated by connection with one of thepivot-bolts, for preventing the retraction of the transferbolt from itssocket; but leaving the retraction of the transfer-bolt to be effectedby hand when the pivot-bolts have been proj ected, which operationretracts the locln'ngbar from interference with the transfer-bolt. Thelocking-bar Z is movable longitudinally across the inner end of thetransfer-bolt e, and is connected with the pivot-bolt f by a bell-crankm, and is shown projected across the path of the transfer-bolt by theretraction of the pivot-bolt. The locking-bar and bell-crank are bothconcealed within the thickness or substance of the wing b, but theportion of the wing adjacent to the bellcrank is broken away to show itsconnection with the other parts.

In Fig. 8, the levers z' are shown exposed, as well as the links g whichmove the pivotbolts, but such parts may obviously be concealed withinthe door, if desired, the same as the locking-bar and its bell-crank.

In revolving` doors having foldable wings which are transferred to theside of the casing, as shown inFig. l, the weight of the wings whenrevolving is commonly suspended from an anti-friction journal above theupper pivot-bolt; but such arrangement is not shown in Figs. 2, 3 and 4,as the means for sustaining the weight of the doors when rotating isimmaterial. I have, however, in Figs. l and la shown a means ofsuspending the wings detachably from a center kingbolt, the top of thewings at the center being provided with a rabbeted socket or hanger nadapted to fit a collar o upon the lower end of the king-bolt p. Theking-bolt is journaled in the beam g over the ceiling e and has a socketin the lower end adapted to receive the upper pivot-bolt f. The hangeris open at one side, as shown in Fig. l, to permit the Wings to be swungoff of the king-bolt when the pivot-bolt f is retracted, i

and the wings are pivoted upon the transferbolts. The bolt f preventsany displacement of the hanger from the king-bolt when the wings arearranged to revolve in the casing.

Fig. 2 shows the wings detached from the casing, to show the slightchange caused in the wings by l:he addition of my improvements; the wingb at the right hand side of the figure showing the visible parts of thehousings g for the transfer-bolts, and all else being concealed fromview.

Having thus set forth the nature of t-he invention what is claimedherein is:

1. In a foldable revolving door, the combination, with foldable wings,of pivot-bolts at the center of the wings, transfer-bolts movablevertically in one of the wings near the edge, and mechanism controlledby the pivot-bolts for locking the transfer-bolts when the pivot-boltsare retracted.

2. In a foldable revolving door, the combination, with foldable wings,of a pivotbolt at the center of the wings, transfer-bolts movablevertically in one of the wings near the edge, and mechanism connectingthe pivot-bolts and transfer-bolts, for retracting one when the other isadvanced.

3. In a foldable revolving door, the combination, with foldable wings,of a pivotbolt at the center of the wings, transfer-bolts movablevertically in one of the wings near the edge, means between the top andbottom of the door for projecting the two pivot bolts simultaneously,and means connected with the two pivot-bolts for simultaneouslyimparting a reverse movement to the transfer-bolts.

. 4. In a foldable revolving door, the com- EDWARD C. HAVILAND.

Witnesses LENoRA LEMAR, BARRY E. MGGUSTY.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Washington, D. C.

